LOGIN
 
Share Page:
Back

Volume 28 , Issue 3
May/June 2013

Pages e122e127


The Effect of Platform Switching on Stress in Peri-implant Bone in a Condition of Marginal Bone Resorption: A Three-Dimensional Finite Element Analysis


Haibin Xia, DDS, PhD/Min Wang, DDS, MS/Li Ma, MDS, PhD/Yi Zhou, DDS, PhD/Zhiyong Li, DDS, PhD/Yining Wang, DDS, PhD


PMID: 23748330
DOI: 10.11607/jomi.2965

Purpose: The aim of the present study was to investigate the stress distribution in the bone around a platformswitched implant with marginal bone loss. Materials and Methods: Finite element models of an implantsupported crown on a mandibular first molar were constructed and included an osseointegrated implant, a metal crown, and cancellous and cortical bone. Two kinds of abutments, conventional and platformswitched, were imported into the model. A variety of different levels of conical marginal bone resorption, from 0 to 2.0 mm in height and width, was created around the implant neck. The stresses generated in the peri-implant bone tissue were analyzed under 200 N of vertical or oblique loading. Results: The location of stress concentration extended from the implant neck toward the apex in association with increases in bone resorption depth. In the bone-resorbed models, the platform-switched implant showed lower maximum equivalent stresses in the peri-implant bone than the conventional abutment. The difference between the two implant models decreased as bone resorption increased. Conclusion: Within the limitations of this study, the results suggest a biomechanical advantage for platform switching in a condition of marginal bone resorption, but this advantage may be weakened when bone resorption is dramatic. Additional animal or clinical studies are necessary to better clarify the effects of peri-implant bone defects on the biomechanical features of a platform-switched configuration. Int J Oral Maxillofac Implants 2013;28:e122e127. doi: 10.11607/jomi.2965


Full Text PDF File | Order Article

 

 
Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.

 

© 2014 Quintessence Publishing Co, Inc JOMI Home
Current Issue
Ahead of Print
Archive
Author Guidelines
About
Accepted Manuscripts
Submission Form
Submit
Reprints
Permission
Advertising
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us
Help